Double Spiral Cobalt Step Drill Bit M35 With Hex Shank Unibit For Metal And Stainless Steel One Quarter To One And One Eighth Inch TiAIN Coated Heavy Duty Cutter That Drills Like Butter

M35 cobalt double spiral step drill bit with TiAIN coating
✔️ Hex shank, single bit, 15 sizes 1/4" - 1-1/8", TiAIN coated

This heavy-duty step drill bit is built from M35 cobalt, ready to cut through metal and stainless steel with ease. TiAIN coating boosts hardness and reduces wear for longer life, while the double spiral flute design delivers fast, clean cuts. Ideal for metalworking, fabrication, and projects that require multiple hole sizes without swapping bits frequently.

✅ Material: M35 cobalt with TiAIN coating for high hardness and wear resistance 89HRC
✅ Double spiral flute design for fast, smooth cuts in metal
✅ 15 hole sizes from 1/4" to 1-1/8" (1/4", 5/16", 3/8", 7/16", 1/2", 9/16", 5/8", 11/16", 3/4", 13/16", 7/8", 15/16", 1", 1-1/16", 1-1/8")
✅ Hex shank for secure grip and quick bit changes
✅ TiAIN coating minimizes wear and extends tool life

💡 What is a cobalt step drill used for in metalworking?

Handy for drilling multiple hole sizes in metal projects with one bit. - Long-lasting wear from cobalt and TiAIN coating - Smooth, clean cuts in metal and stainless steel - Handy for fabrication and DIY metal projects